World-record signing Neymar was presented to supporters prior to the match amid a party atmosphere and sat alongside his father.
Adrien Rabiot headed against the woodwork for PSG, before Edinson Cavani scored the opener shortly before half-time, converting Dani Alves' cross.
PSG took their time to put the result beyond doubt, but Javier Pastore's late clincher ensured they joined defending champions Monaco in starting with a victory as Amiens, playing their first-ever Ligue 1 game after winning back-to-back promotions, offered little attacking threat.
The hosts started on top and created good early opportunities without testing away goalkeeper Regis Gurtner.
First, Rabiot and Angel Di Maria combined to set up Cavani, but the striker who netted 49 goals in all competitions last season shot wide of the near post.
Amiens defender Issa Cissokho then escaped punishment after PSG claimed he had handled in the box, before the hosts wasted a glorious chance to take the lead.
From a clever corner routine, Dani Alves' shot deflected into the path of Rabiot, who could only send his header against the angle of post and bar from a yard out.
After Rabiot had finally tested Gurtner for the first time, PSG moved in front three minutes before the break.
Alves was the creator, crossing for Cavani from the right, with the striker turning defender Prince-Desir Gouano and finding the corner with a low left-footed finish from eight yards, bringing an applauding Neymar to his feet.
3 - Dani Alves has already been involved in 3 goals in 2 competitive games with Paris (1 goal, 2 assists). Easy. pic.twitter.com/hZjCdOnkdh— OptaJean (@OptaJean) August 5, 2017
After PSG brought on Presnel Kimpembe for an injured Thiago Silva at half-time, Di Maria's volley was kept out by Gurtner in the first chance of the second half.
Di Maria should have scored soon after, but he chipped wide after being slipped through on goal by Cavani.
Amiens' only attempt on target came after the hour mark, Seybou Koita forcing a save from Alphonse Areola, but PSG were always looking comfortable despite their narrow lead.
Cavani then shot straight at Gurtner from Pastore's pass as PSG looked to make sure of the three points.
And victory was finally sealed with 10 minutes remaining, Marco Verratti's throughball releasing Cavani, who squared for Pastore – the man who vacated the number 10 shirt for Neymar – to fire home.
Key Opta stats:
- PSG have won their opening game of a Ligue 1 season for the third time in a row, their best run since 1985-1988 (4 seasons in a row).
- PSG have lost only one of their last 21 Ligue 1 games (W17 D3), in April 2017 at Nice (1-3).
- PSG are unbeaten in their last 24 home games in Ligue 1 (W18 D6), with their last defeat coming in March 2016 v Monaco (0-2).
- PSG have scored in their last 13 games in Ligue 1 (35 goals), only Monaco are currently on a better run (33 games).
- Edinson Cavani has scored nine goals in his last nine Ligue 1 games.
- Javier Pastore has scored for the first time in Ligue 1 since March 2016 at Troyes, and for the first time at the Parc des Princes in the top-flight since September 2015 against Guingamp.